What do you think about blockchain and bitcoin？

The reason why money is valuable is because it has its own value, such as gold coins, silver coins, and even shells. Although the later banknotes do not have this characteristic, the government artificially gives the meaning of the value of this paper, and people choose to believe in the government, believe that this paper can fulfill the labor they have paid, and then the virtual currency is your bank. The number in the account, this is the commitment that the bank and the government have made to you together, but... Bitcoin does not seem to have this feature. In other words, it is just a mining accessory, I don’t think it has value. Ok, okay... I don’t raise the bar, let’s take a step back and talk about the existence of Bitcoin.

To think about this problem, we must first look at the bitcoin in the end. The simple point is the reward of mining. Mining is an important part of the blockchain. For example, the debtor and the creditor each have a ledger, record. The accounting between two people, mining is the process of accounting, but only one person at a time to keep accounts, another person only checks the security of the correctness of the information, and then copy the new information on his own book Yes, in fact, this is the simplest blockchain, and the participants in this blockchain are closely related to the information. Then the problem comes, and the reward of mining should not guarantee the correctness of the information? Is the creditor still paying a small red flower to him? Then let the whole village people admit that this little red flower can be exchanged for a bag of rice, hehe... I won’t let him change my rice anyway... I don’t raise the bar, let’s take a step back and look at it. There is no value in mine mining. It seems to me to be a very private matter. If I am the creditor, I will not let the second person of the village head help me to keep accounts, that is to say, mining is a The responsibility is that each character in the blockchain is responsible for itself, and the rewards that you give yourself should be only the role of spiritual comfort.
In other words, each role in the blockchain is a volunteer, and also a participant, supervisor, and joins in the blockchain in order to maintain the stability and security of the information, although labor is required, but Labor is for everyone, including yourself. If you think so, you don’t need rewards at all. Everyone’s behavior is voluntary. If the debtor is not willing to pay the bill, I can’t just remember it as a creditor. Ok... I don't raise the bar, and finally take a step back. I can't retreat to the value of bitcoin. On the contrary, I think it's not more valuable but more valuable. As an ordinary person, after the emergence of Bitcoin, what I saw, the price of computer accessories soared (not all because of mining), and countless speculators joined the boom in the investment blockchain.
From the point of view of the blockchain, bitcoin does not seem to be so good. After all, it attracts many unrelated people and increases the cost of maintaining information security, although more blockchain participants can be to a certain extent. Resist the attack on the blockchain (51% attack, etc.), but this effect is far less than the risk cost brought by the increase of participants. I don't want to raise the bar, nor do I have any resistance to emerging currencies. These problems are just to understand a new one. When things are things that come naturally, I always believe that existence is reasonable.